Many of Ed McBain's books are on sale for $1.99 today at Amazon US. Not sure how long this will last, and not as good as the $0.99 sale of legend a while back, but still pretty good. There are both 87th Precinct and Matthew Hope titles on sale.

McBain's 87th Precinct books are among the best (IMO) of the police procedural genre.

The link (sorry it's messy; I'm not a whiz at Amazon's seraches) is here:

In the history of the United States, only four active federal judges have been murdered. Judge Raymond Fawcett has just become number five. His body is found in his remote lakeside cabin. There is no sign of forced entry or struggle. Just two dead bodies: Judge Fawcett and his young secretary. And one large, state-of-the-art, extremely secure safe, opened and emptied.

One man, a former attorney, knows who killed Judge Fawcett, and why. But that man, Malcolm Bannister, is currently residing in the Federal Prison Camp near Frostburg, Maryland. Though serving time, Malcolm has an ace up his sleeve. He has information the FBI would love to know. Malcolm would love to tell them. But everything has a price—and the man known as the Racketeer wasn’t born yesterday.

After losing his leg to a land mine in Afghanistan, Cormoran Strike is barely scraping by as a private investigator. Strike is down to one client, and creditors are calling. He has also just broken up with his longtime girlfriend and is living in his office.

Then John Bristow walks through his door with an amazing story: His sister, thelegendary supermodel Lula Landry, known to her friends as the Cuckoo, famously fell to her death a few months earlier. The police ruled it a suicide, but John refuses to believe that. The case plunges Strike into the world of multimillionaire beauties, rock-star boyfriends, and desperate designers, and it introduces him to every variety of pleasure, enticement, seduction, and delusion known to man.

You may think you know detectives, but you've never met one quite like Strike. You may think you know about the wealthy and famous, but you've never seen them under an investigation like this.

Free Today on Amazon - The Liquidator by John Gardner
Paris, 1944.
As the city is liberated, Sergeant Boysie Oaks kills two Germans attempting to assassinate an Intelligence Corps officer named Mostyn.
Two decades later, the suave, sadistic Mostyn has become the Second-in-Command of British Special Security.
He recruits the man he believes is a master assassin -- Boysie Oakes -- to quietly murder potential security risks.
He is 'The Liquidator'.
But is Boysie the right man for the job?
He is preparing to take Mostyn's secretary to the Cote D'Azur for a weekend of romance.
Yet what starts as a few days of seduction in the Mediterranean sun turns into a nightmare for Boysie as he becomes more and more embroiled in Operation Coronet.
Captured, the tables are turned, and the assassin becomes the target.
Boysie Oakes will need all his wits to stay alive.